IN169717B - - Google Patents
Info
- Publication number
- IN169717B IN169717B IN982/CAL/88A IN982CA1988A IN169717B IN 169717 B IN169717 B IN 169717B IN 982CA1988 A IN982CA1988 A IN 982CA1988A IN 169717 B IN169717 B IN 169717B
- Authority
- IN
- India
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Crushing And Pulverization Processes (AREA)
- Ship Loading And Unloading (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4334764 | 1987-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN169717B true IN169717B (en) | 1991-12-14 |
Family
ID=21338812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN982/CAL/88A IN169717B (en) | 1987-12-08 | 1988-11-29 |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN1034037A (en) |
| DE (1) | DE3841407A1 (en) |
| HU (1) | HUT57379A (en) |
| IN (1) | IN169717B (en) |
| PL (1) | PL276280A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105888712B (en) * | 2016-04-16 | 2018-02-02 | 太原理工大学 | A kind of Sub-Level Caving actively crushes hydraulic support |
| CN110671141A (en) * | 2019-10-28 | 2020-01-10 | 陕西开拓建筑科技有限公司 | Hydraulic support for separate mining and transportation mining of thin coal seam and mining method |
-
1988
- 1988-11-29 IN IN982/CAL/88A patent/IN169717B/en unknown
- 1988-12-01 HU HU614188A patent/HUT57379A/en unknown
- 1988-12-07 CN CN 88108376 patent/CN1034037A/en active Pending
- 1988-12-08 PL PL27628088A patent/PL276280A1/en unknown
- 1988-12-08 DE DE19883841407 patent/DE3841407A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN1034037A (en) | 1989-07-19 |
| DE3841407A1 (en) | 1989-06-22 |
| HUT57379A (en) | 1991-11-28 |
| PL276280A1 (en) | 1989-07-24 |